Printing-plate mounting



W. F. BRGMANN.

PmNnNG PLME MOUNTING.

2 SHEETS-SHEET l.

5555 55 74ay M W. F. BRGMANN.

PRINTING PLATE MOUNTING.

APPLICATION FILED IIILY 19,1915.

meme@ De@ 6,1921.

2 SHEETS-SHEET 2.

.tions of' adjustment in a 'of thegroove; to provide means naires straat-s WILLIAM F. BRGMANN, OF EVANSTQN, ILLINOIS, ASSIGNOR TO PRINTING COMPANY, A CORPORATION 0F caerse.

UTILITIES DELAWARE.

insana?.

application 'inea rely 19, i915. seriez No. 40,640.

To ZZ whom it may concern: Y

Be it known that I, 'WILLIAM F. BRG- .\i.\N.N, a citizen of the United States, residing in the' city of Evanston, county of Cook, and State of Illinois, have invented certain new and useful AImprovements .in Frinting- Plate Mountings, of which the following is a specification.

My inventionrelates to improvements in,

printing plate mountings, and more particularly refers to apparatus which involves the elimination of the wooden backing long employed. on` electrotype and other printing plates. This invention relates to improvements upon my previous United States Patent No. 983,675, granted February 7, 1911.

Among the salient objects of the invention are, to provide a mounting block for a printing plate with an improved form of hookor clamp for securing the plate on the block;

Vto provide improved means'for detachably securing the hook or clamp in various posigroove formed in the face of the mounting block; to provide improved mechanism aifording micrometer adjustment of the hook or clamp lengthwise for locking said mechanism in the adjusted position against accidental movement and preventing the printing plate from becoming loosened from the mounting block owing to the jar and vibration incidental to the operation of the printing press; and in general to provide improved devices for mounting printing plates.

In the drawings which accompany this application- Figure 1 is a plan view of the bed of a press;

Fig. 2 is an enlarged side elevation of a stationary catch in the diagonal groove of a printing block, parts of which are broken away;

i Fig. 8 is a of Fig. 2;

Figa is a of Fig. 2;

' 5 is a of Fig. 4;

Figxv a of Fig. 5;

Fig. 7 is an enlarged fragmentary plan section taken on the line 6 6 I view of thestationary catch and block illus- Specification `of Letters Patent.

eration of the rack teeth or other .The strip i3 Patented Dec. 6, 1921.;

and an adjustable micrometer catchjnounted on said block; i

Fig. 9 is a fragmentary section showing the manner in which the insertion-of thekey operates to disengage the micrometer detent;

Fig. 10 is a side elevation of the catch shown in Fig. 8;

. Fig. 11 is a section taken on the line 1]. 11 of Fig. 10;

Fig. 12 is a section taken on the line 12-12 645 of F ig. 11, and showing a catch in position in the groove of a mounting block, certain parts of which are broken away;

Fig. 13 is a section taken on the line 13 13 of Fig. 12; y i

Fig. 14 is an end view of the catch shown in Fig. 10, looking from the left-hand of said figure; i

F ig. 15 is a section taken on the line 1.5 15 of Fig. 12, the block being omitted.

The base plate of my improved mounting is preferably composed of a series of square4 units having diagonal grooves therein for insertion of the catches, these grooves being .Y somewhat similar vto those shown in my previous Patent No. 983,675. In Fig. 1 I show a base made up of six of these units 40 which for purposes of lightness I preferably construct oit' aluminum. The diagonal grooves 41 in these units, as shown bestV in Fig. 3h85 are wide enough to admit the bodies of va,- rious catches or clamps utilized 'in connection with the metal mounting base.' Slightly below the open top of the groove the latter is enlarged so as to furnish. a pair of opposed shoulders 42 with which cooperate engaging devices carried l by the various types of catches for preventing the same from rising out of the grooves. Some distance below ,the shoulders 42 I mill or broach out the 95 opposite sides of the grooves and in one side l insert a hardened' steel Wear strip 43, and in the other side of the groove directly opposite I insert a somewhat similar hardened steel wearstrip 44 which, however, is 10G provided with rack teeth 45' projecting into the slot. The bottom of each'of the diagonal grooves -ll is preferably located a. substantial distance below the lower edges of the rack teeth 45 so as to allow a space for accumula- 105 tions of dirt or oily matter to run into or accumulate without interfering with the o-pparts. and rack bars 44 are held and located in the units lof the base by means of ilO `56 at its lower end,

transverse pins 46 (see Figs. 8 and 7). The units 4() which, as previously stated, are preferably made of aluminum, are cast hollow between the grooves 41, as shown at 47 in Fig. 3, in order to save metal and further to enhance the lightness of the construction.

The units 4() are maintained in register with each other by means of dowel holes 48 (see Eig. 8) and dowel pins 49 (see Fig, 7). ln order to prevent interference by the dowel pins 49 when locking the complete base in the form by means of the usual devices employed for that purpose, l construct the same in such a manner that when pressure is ap plied to the ends of the dowel they will enter and sink flush with the. outer edges of the units. To this end l make the dowel pins 49. with enlarged inner ends 50 which are adapted to slide in cylindrical holes bored in the plate blocks, the pins being normally forced outwardly by means of coil compres sion springs 51 inserted behind the rear faces of said enlargement 5l). The pins 49 are prevented from {iying out of the bores bv means of sleeves 52 forced into the ends of said cylindrical bores after the springs and pins have been inserted.

Describing the stationary catch 53, the same being illustratedin Figs. 1 to 7, inclusive, this consists of a main body portion, rectangular in longitudinal cross-section, the upper end being of the proper widthto fit snugly in the open end of the groove 4l. Thellower end of the body portion is reduced in width by milling ofi' each side, as shown at 54, so as to make room for the teeth 45 of the rack bar. Both sides of the catch are cut away in this manner so that it will make no difference which way the stationary catch may be inserted in the groove.

Describing the means for locking the stationary catch against longitudinal movement in the groove, in one end of the body l drill a holewithin which is a cylindrical bushing 55 having an enlarged shoulder head portion its upper end being threaded, as shown at 57, in order to enter a threaded aperture in the lower end of the jaw 56. Thclower end of the cylindrical aperture in the body portion is enlarged to admit the shoulder portion 56 on the bushing 55 and so prevent upward increment of said bushing and the jaw secured thereto. l provide a slight amount of clea rance between the lower edge o l5 the ia f' 5H and the uppercdge of the body portion so as to allow the jaw- 59 to swivel freely on its bushing mounting.

' The u Der edge of the aw 56 is bored out and countersunk to admit the enlarged upper head of thcpin 5S). which slides freely in the bushing and the lower end of said pin 5i? is provided with a conieffrl enlargement 66 drir-"a and firmly secured upon a reduced lower portion 6l of the pin 5S). rThe extreme lower end or" said pin 5." is screwed tightly transversely across the zontally swinging into a block 62 which slides in a slot 63 cut lower. end of ,the body portion of the catch. Said block 62, as shown in Figs. 2, 3, and 6, has projecting side teeth 64 which engage the teeth 45 of the rack bar when the block 62 is depressed. The pin 59, as to its upper end, is long enonghto allow a substantial amount of vertical moveq ment of the sliding block 62 before the head of the screw strikes the upper end of the bushing 55. llVhen thepin 59 is in the position shown in Fig. 5, the lower edges of said teeth 64 are high enough to avoid the upper-edges of the rack teeth 45 so as to allow the stationary catch to slide freely along the groove 41. When, however, the pin 59 is depressed, the block 62 slides downwardly and the teeth 64 engage the rack teeth 45 and securely lock the stationary catch in the groove and prevent sliding movements thereof. A great advantage of the stationary catch above described is that it may be inserted and slid along the block into any location before it is locked into position. This is a very great convenience in actual practice. Describing the means for locking the stationary catch against vertical movement in the groove 4l, below the level of the shoulders 42 I mill a horizontal slot 65 in the catch body so as to admit a pair of hori locking members 66 and 67 which pivot scissors-fashion upon a vertical pin 68 inserted from the upper side of the catch body and threaded into the lower portion, as at 69. The rear 'ends 66 and 67 of said locking members lie 'm horizontal side grooves formed in the body of the catch above the slot 63, and `the adjacent inner edges of said portions 66' and 67 are cut out so that in conjunction with each other they constitute a circular pocket or bearing for the' conical colla-r 60. As shown in Fig. 6, the inclination of said circular bearing notches in the members 66 and 67 corresponds with the inclination of the cone 6l), so that when the latter` is depressed the' parts 66 and 67 separate and cause the ends of the members 66 and 67 to engage below the shoulders 42 of the groove 41 and thus-prevent withdrawal of the catch. lu order to prevent loosening of the catch, due to improper outward vertical mov ments of the pin 59, the upper end of the cone 6() has a short cylindrical portion, as shown at 69, so that' when the pin' 59 is completely depressed the said cylindrical portion 69 lits between corresponding straight portions`7() and 71 on the adjacent edges of the members 66 and 67 so that there is no tendency for `the cone to rise. Although one side of the teeth 64 engage'the rack bar teeth 45, it should be understood that the outer edges of the `teeth on the other side of the member 62 slide upon ,the hardened steel wear strip 43, so that A,there .away .from the kcatch -the catch body has been teeth 64- into the rack stance, the fourth rack ,I all interchangeable, it is a is absolutely no tendency forthe stationary catch to tipin a transverse direction, whatever may be the location of the printing plate with reference to the jaw, The catch is released by inserting the point of any convenient tool, such as a lsi'na'll screw-driver, in. one oit' the depressions 73 and then prying' up the head of thtA screw thereby per niitting the spring 7l to retract the parts G6 and 67. ln order to facilitate engagement. of the teeth (54 with the rack bar teeth 4,5, the upper edgesot' the latter are beveled ofi'. as shown at 72.- j

The device is exceptionally rapid to manipulate, since the catch is first located in the groove 41, andthen a single movement of the pin 59 `locks the catch against longitudinal movement and against upward movement. The spring 71a, which tends to close the scissors members 66 and 67, causes the pin 59 to be resiliently forced upwardlv moved into approximately correct position, the entrance of the lightly vpressing down said pin 59 to see register. t

Heretot'ore great difficulty has been experienced in linin r up the stationary catches and in locking t em in theirproper positions on the foundation blocks. To eliminate this difliculty, I locate all ot' the racks upon the head of if the teeth are in proper ,44C with their teeth in exactly the same position relative to their distance from one edge of the block; so that the center of, for intooth in any groove of the block will always be exactly the same distance from the lateral edge of the unit. I also' inscribe on the si4 face of the block a series ot' parallel guide lines 73a-and a second set 74a crossing the first set at right angles, both sets` of lines dividingthe surface of the unit kinto a,

blocks will be continuations of each other. A convenient spacing' for these lines is one pica, and I prefer to cut as shown at `7 5, solas to make the line spacings readily distinguishable. By the aid of these lines and by virtue of the fact that the racks are all located in precisely the same relative longitudinal position in the base-blocks'and the stationary catches being simple matter to line up the catches on the foundation.- In order still further to facilitate the lining p of the stationary catches. on the foundation, ll construct the racks with their teeth spaced apart such a distance longitudif rcally that their positions arel definite with respect to the surface of the` plate foundation.y

stance, I may malte the racks` with For ina tooth c spacing such as to cause the stationary catch body, so that after may be tested by' definite number of' parts, so that the guidelines of adjacent certain lines deeper,

f lever 77.

guide lines vinscribed on the vmovement out of the groove 41 by means of a pair of cam bars 76 which are mounted to slide in a pair of oppositely disposedhori- '/.ontal longitudinal grooves in the sides of the body portion 75, the upper edges ofthe cam bars being the right height toengagennder the overhanging bars are in their proper position to effect such locking engagement. In order to slide'the cam bars 7G into and out of engagementwith the shoulders 42, I mount in one end of the body portion 75 a short flat lever77 which,` intermediate its ends, is pivoted upon a fixed horizontal pin 78 transversely disposed in the end of the body portion 75, the center of which is slotted out, as shownat 79, in order to admit said lever 77. In the lever 77, to-

`shoulders 42 when said camy ward the upper end, is securely fixed a trans-v verse pin 80 which projects outwardly from eachside of the lever 77 a sufficientl distance to engage a pair of notches 81' (see F 11) in the ,ends of the cam bars 76. In the shelves 82 of' the' body portion 75 constitut- 'ing lthe bottom sides of the grooves in which slide the cam bars 76, I fix two pairs of fixed pins 83, the upper ends of said pins projectwill be that said bars will be compelled to move in an oblique directioncorresponding with the obliquity of the grooves 841. Thus, the cam bars 7G will be forced inwardly or outwardly so as to engage or disengagethe shoulders 42, as the case may be. 0n the upper end of the lever 77 is a longitudinally disposed finger piece 85, the inner end 86 of which is beveled so as to permit the insertion ot' the v.finger nail or any i der the end of said plate 85 to operate the In the full-line position of said fingerpiece 85, shown in Fig. 10, the cam bars 76 arethrust outwardly to engage the shoulders 42, as shown also in Fics. ll'to 15. In the dotted-line position of the lever 77 and finger piece' 85 the cam bars are Withdrawn with their edges `flush with the sides ofy thev catch may bel convenient tool uneither position and prevent rattling or displacement of the lever 77 by the movement of the press, I insert in the lower end of the lever 7'( a tliimble 88 which slides inia transverse cylindrical bore S9 and is forced o ut, wardly by means of a small coil compression spring 90 which causes the rounded end of the thimble to enter either one of a. pair of round holes 91 and 92 drilled through the sides of the slot T9. In the dotted-line position, the end of the tliimble 88 engages the inner end of the hole 92. and iii the talkline, position it engages the hole 91. as shown in Fig. 10. lVlien the catch T-l is insertedin the groove, it is prevented from falling to the bottom of the same, by one of the shoulders 8T striking the upper edges of tlieteetli 45 of the rack bar t-t (see Fig. 13).A

' Describing the plate-clamping mechanism, in the body portion T5 betweenthe center of the catch and the end which is remote from the lever T7, I drill out a vertically extending cylindrical hole within which is located a hub 94 having an upper enlargement 95 which is rectangular as to its cross-section and tits in a corresponding enlargement in the upper-end of saidcylindrical apertiir The upperside of said enlargement 95 is iusli with the upper surface of the bodyportion 75 and is extended as to its upper end outwardly at each side s o 'as to constitute i plate-clamping jaw 96. 'l'lie said jaw 96 is beveled so as to 'fit the regular printing plates, and its` hiibf94 swivels freely in the body portion T5 so that the' jaw will accommoi ate itsclt -to the edge ot tlieprinting plate. In order to prevent the liub 94 from rising out ot' itsbeaiiiig, thel lower end of said bore, is enlarged from theundcr side, as showiiat 9T. andtlieilower eiid ofv the hub is drillcdout and threaded to admit a headed` threaded bushing 9S which forms a unit with the hub 94 and thus prevents the withdrawal of the jaw from the body portion. 4

Describing the mechanism for effecting micrometer adjustment of the catch iii the grooves 41, the underside of the catch is cut away so-as to admit a worni'99 which rotates upon the stein 100 ofa pin 101 arranged longitudinallv in the center of the bottom part of tlicbody portion and supported by a shouldered nut 102 which enters a longitudinal hole 103 in the end of the body portion and screwsupou the threaded end of the stein 100.' The other end of said pin 101 is supported in a longitudinal bore 104` at the other end ofthe body portion. The large end of the pin 101 is formed with an enlarged head 105'. the upper side of which-is flattened. as shown at 106. andengagcs an ovcrhaiigiiig shoulder 10T at .the eiid of the body portion and so pi'cvcntsthc pin 101 from turning. Y

The inner end of the largediameter pin 101 is flattened-by milling otf its upper side,

as shown at 108, in order to form a seat for the lower end of an axially vertical bevel pinion 109 which is co-axial with the hub 9% and rotates in a circular recess below the threaded bushing 98. The bevel pinion 109 is pressed upwardly by a coil spring 108"L located in a small couiitersiiik 109 in the bottom of thepinion. In the jaw 96 and the bushing 98 is a cncentric drilled hole 110 of a sulicient diameter to admit a square key which is adapted to enter a square hole '111 in the center of the bevel pinion 109.

The end of the worm 99 is extended and has bevel teeth 112 cnt upon it to mesh withv the teeth 113 on the oblique lower face of the bevel pinion 109. It is manifest that when the bevel gear 109 is rotated b v a suitable key inserted in the bore 110, the interinesli` iiigbevel teethwill cause the worin 99 to re volve, and the threads of the latter which engage the teeth 15 of the rack bar 14, as shown in Fig. 13, will cause the catch to move bodily longitudinally in the groove 41, thereby forcing the jaw 96 toward or away from the edge of the printing plate.

The pressure transmitted through the catch and worm to the rack teeth is of such a character as tends to separate the two lower depending ends of the catch body longitudinally. `This separating tendency, diie to the pressure of the worm 99, is substantially obviated and the catch body is thus strengthened b v reason of the fact that the longitudinal pin 101 ties the two ends of the catch body together and receives a' substantial partof the stress. l also prefer to makes the diameter of thestein portion 100 of said pin a substantial amount less than the .diameter of the longitudinal hole in the worin 99 so as to allow the worin to assume a position where its periphery on the side opposite the rack teeth is in bearing contact with the wear strip t8. thereby relieving the catch body of transverse. strain and prevent-pV ing it from tipping. I prefer to accentuate the crowding edect of the worm 99 and its consequent pressure upon the facey of the wear strip #t3 by beveliiig the teeth of. the raclc sligitly, as shown at 11:2 in Fig: 8. The etl'ect of this is to hold the worin frictioiially iii adjustment aftei,beiiig set, and prevents its loosening.

It has been found that some times dirt, or grit has a tendency to collect or deposit on the mating faces of the respective block uiiits,'tliereby preventing the same from be ing forced into proper intimate contact with cach other. The space thus present between the edges of the blocks causes difficulty when the worm of the micrometer catch attempts to pass out of engagement with the end of the rack in one block and into engagement with the adjacent end of the, rack in the corresponding groove of the contiguous block. I overcome this difficulty by asados? shaving off the sides of a few teeth at the ends of the racks, there v reducing the tooth thickness and increas t so that the threads of worm will be roperly engaged and the `worm will pull itself into mesh with the adjacent rack; this being indicated at 113a in d.

In Figs. 9, 10, 12 and 13 'i have illustrated a devicewhich I have found to be very ad# vantageous in preventing the loosening up of the micrometer catch owing to improper movements of the Worm caused by the vibration of the press. rihis comprises a vertically swinging dog 150 which is hung from horizontal pin 151 and is located in a vertical slot 152. The lower end of said dog 150 projects obliquely under the bevel wheel 109, the teeth of whlch are engaged by the sharpened edge- 153, :the dog being pressed toward the bevel Wheel by a small coil compression spring 154 inserted in a iongitudinal drilled hole 155 bored in the body of the catch. The pin 101 is slotted by milling', as shown at 156, in orderto admit. the lower end 'of said dog, and the body of the pin 101 is also provided With a vertical hole '(not shown) which admitsthe `reduced lower end of the key 157 when the latter is inserted for the purpose of adjusting lthe catch as shown in F ig. 9. .1t Will be observed by reference to Fig. 9 that when the key 157 is inserted, the reduced stem or tip 158 engages the point 159 of the dog and rocks the latter on its pivot slightly, thus forcing the edge 153 out of engagement with the teeth of the bevel gear and .permitting the latter to be rotated bythe key; As soon as the catch is adjusted and the key 157 is Withdrawn, the dog 150 is permitted to rock on its pivot, the edge 153 rengagsng the teeth of the bevel gear 109 and securely iocking the same against rotary movement,I I v Although I have described what may be considered a preferred embodiment of m invention, mechanical details and arrangement maybe modified Widely Without departing from vthe spirit of the invention ehence, I do not Wish to be limited, except as specilied in the ap pended claims.

1. In a printing plate mounting, the combination of a foundation having an under,- cut groove" in its upper surfe/:cfai plateclamping catch -having a bodyinsertible in, and slidable along, said groove, means carried by, and movably mounted on, said body for locking said body against movement out of said groove and engageable with the under-cut surfaces of said groove at points spa-red longitudinally of said groove, a member carried by said body for controlling said locking means and means in the groove and on the block meshing together, when the he tooth space' 'carried by, and

. engage and disengage it should be understood that theV block is locked in the groove, dto hold the plate clamping catch against longitudinal movement in the groove.

2. In a printing plate mounting, the combination of a foundation block having a' groove in its upper surface, said groove hav-A lng opposed overhanging shoulders, a plateclamiing catch provided with a body inserti le in said groove and slidable between said shoulders, a pair of transversely movable opposed locking members capable of being simultaneously spread lapart to engage under saidopposed shoulders and thereby lock said body in said groove, a member permanently mounted on, said body for controlling saidlocking members and relatively adjustable intermeshing means on the Wall of the groove and the body' ofthe plate clamping catch for locking saidjcatch against sliding movement in the groove.

3. In a device of the class described, the combination of a foundation block having a channel in its upper surface, arack associated With said channel, a plate clamping device provided with means coperating with the rack to effect micrometric movement 'of vsaid device along the. channel, means on the block and separable locking members on the clamp having a Spreader adjustableto l the locking members with said means on the block for locking the clamping device against transverse movev ment out of the channel and permitting sliding movement therein, and a spring lock for holding said spreader in' its positions of adjustment.

e. In a device of the class described, the combination of a foundation block having a channel in its. upper surface, a rack secured in said channel a plate clamping device freely insertible in said channel 'and provided With means coperatingl With the rack I to effect micrometric sliding movements of the clamp along the channel, means in the channel and separable members on the clamp adapted to engage said means to lock the clamp against transverse movement out of and permit sliding of said device in the channel, a manually operable spreader for expanding and' ret-racting said members, and

a spring for lookin said spreader to hold said members ineit er the expanded or retracted position, f

5. In a device of the classdescribed, the

combination of a foundation block provided with a channel in its v`fuppe'r surface, la stationary rack associated with said channel, a plate-damping device provided with means cooperating with the 'rack to effect micron metric siiding 'movements of said.. device valong the channel, said channel being formed vwith over-hanging portions, a pair of parallelly-disposd locking bars on the opposlte 'over-hanging portions to prevent with over-hangingr Portions longitudinal sides of said catch movable at will to effect lateral engagement with said removal of said clamp out of said channel, and means on said catch for controlling said bars.

6; In a device of the class described, the combination of a foundation block provided With a channel in its upper surface, a stationary rack associated with said channel, a plate-clamping device provided with means coperating with the rack to effect Amicrometriclr` sliding movements of said device along the channel., said kchannel being formed a pair of parallelly-disposed locking longitudinal sides of said catch, anda common actuating member carried by s'aid catch and operable at will for effecting bodily movements of said bars to engage the same with said over-hanging portions to Apreventtransverse movement of said ela-mp out of said channel.

7 In a device of tlfetclass described, the combination of a foundation 'plate' provided with a channel in its upper surface, a stationary rack associated with said channel, a plate-clamping device provided with means coperating with the rack to effect micrometric sliding movements of said device along the channel, said channel being formed with over-hangin0f portions, a pair of parallelly-disposed loc ring bars on the opposite longitudinal sides of said catch, and cam mechanism mounted on said catch for effecting at will symmetrical bodily movements of said bars to engage the same with said over-hanging portions for preventing movement of said clamp out of said channel.

8. In a device of the class described, the combination of a foundation plate provided with a channel in its upper surface, a stationary rack associated with said channel, a plate-clamping device proifided with means coperating with the rack to effect micrometric sliding movements of said device along the channel, said channel being formed with over-hanging portions, a pair of parallelly-disposed locking bars on the opposite longitudinal sides of said catch, and a coin,- mon actuating member movably mounted on,

and carried by, said catch, and operable at will for effecting symmetrical bodily movements of said bars to engage the same with said over-hanging portions for preventing' movement of said clamp out of said channel.

9. In a printing plate mounting, the combination of a foundation block having a channel in its upper surface, a. rack mounted in said channel, a printing plate clamp having a body portion with spaced depending ends integral therewith and slidablymounted Vin said channelE a shaft supported in and locking said ends together, a worm Wheel rotatably nwunted on said shaft intermebars on the opposite' diate of said 'depending ends and engaging said rack, andgearing for actuating the worin to coperate with the rack and move of, the racks of adjacent units being longitudinal continuations of each other, a catch body provided with means coperating with the racks for effecting micromtric movements of said catch body and adapted to travel across the boundary line between'adjacent units, said racks having adjacent end teeth, reduced in thickness, whereby said cooperating means is capable of passing out of engagement with the `end of one rack and into engagementlivith the end of the adjacent4 rack, in the event of inaccuracies in assembly'of said units.

11. Ina printing plate mounting, the combination of a plate clamp, means for effecting micrometric movements of said clamp including a rotatable member operable by a removable key, and a locking member cooperating the clampk in various positions of adjustment and adapted Ato be disengaged by the insertion of said key in said rotary member.

12. Ina printing plate mounting, the combination of an adjustable plate clamp, a block lfor supporting the printing plate, gearing for effecting micrometric movement of said clamp with reference to said block, said gearing including a rotary member operable by a removable key insertible in said rotary member, y and a. locking member adapted to lockthe rotary member in 'various positions of adjustment and adapted to be disengaged by the insertion of said key.

13. 'Inap'rinting plate mounting, the combination of a grooved block, a plate-clamping Vcatch located in said groove, a train of gearing for effecting micrometrio movements of said catch in said groove, Said gearing including a rotatable member operable by a removable key,'a pivotedlocklatter.

14, Inaprinting plate mounting,the oombination of a grooved block, acatch in said groove, a train of gearing for effecting micrometric movements of said catch in said groove, said gearing including a toothed rotary member carried by said catch and adapted to be operated by a key insertible in said catch, and a pivoted locking member adapted to engage `with the teeth of the rowith the rotatable member to lock reame? en member te loelt tbe oateli in various poions oi' adjuetment and adapted to be real bythe insertion ot" said key in Said ik ate monntingmtlie com on ol a forintY ation bloeit .liar/"ing a in its upper surface, an adjustable teli loeated in said groove. means ter .locksan! ratcli in 'said groove agjarsat vertovemen't ont said groove, a rack Hi said groove, a rot; memm said eaten eoiperati 'r witl:- rotatable to mirroz'novemenlfe oi iid (fateli in Said a second rotary member eoperattiret rotarV17 member and adapt-- the same, aid e nd rotary ingr providfn rrb a central hole rtion ot a removable key? a piv- 'ngr member normally enga@ ng 'tbe f one et' said rota j niemeers but ed to be released by the insertion of said ire i' .in said .seeond rotary member, and ring. normally forcing said locking er into enmigenient with the periphery 'd rotary member. le. ln a printing' plate mounting, the combination ot a groored foundation block, a if ela pingfeatlfli located in Said groove, ,s for loekingf Said ratrli against movein said groove, a rank associated with .4 li meer@ a worin with its axis parallel ''li 'aiil tgroove and rack and carried ,by l raten tor ei'eetingg mirrometrie move* ment et' said raten in said groove by eooperation' with said raelt, a bevel gear haw ing.; its axis vertical and mounted to rotate/ in said catch and cooperating with said printingl J in a l l n n ff. el

.a vertical plane Worm to effect rotary movement thereof, said bevel gear having a central keyed hole therein for the insertion of a removable key,l a pivoted locking member swingingin and having;r its lower end extendingf below said bevel gear and adapt ed to be Apushed aside to rock said locking member on its pivot wbenthe l'ey is inserted in said bevel gear to rotate the same, and a spring normally forcing said locking member into engagement With the periphery of said bevelgear.

1T. Ynaprinting plate monntingggtlie eombination of an adjustable plate-elan'ipinggdevice, a member for adjusting; said plateelanip wlierebjv mierometrir movements of said plate-clamp may be effected, and means for locking; said adjusting,f member, said means beinr adapted to be Withdrawn and .held from engagement Wit-li said member during tbe operation of the latter.

18. lnaprinting` plate 1nounting,tliecom bination ot an adjustable plate-clamping derice, a member for adjustingsaid plate? clamp whereby nnerometrie movements of said plate-clamp may be effected, means movable with said el-arnp for locking said adjusting' member whereby improper movements ot' said eateli are prevented, and a key for operationr said member adapted to release and bold said means Afrom engagement with said member duringr operation ot' the latter.

VILLAM l?. Yilitnesses z' SONS, Enviar: Roan.

BR llGll/INN.. 

